CVE-2020-3350Public exploit

Arbitrary file deletion via quarantine race

Published Jun 18, 2020 · Updated Nov 15, 2024

A race condition in Cisco Secure Endpoint allows local users to delete arbitrary files on affected hosts through malicious-file scans. During quarantine, guardrails can be bypassed between scanning a malicious file and the privileged cleanup operation, letting a symlink redirect deletion. Local shell access and winning the timing race are required; successful deletion can destabilize the host or stop endpoint protection.

CVSS severity5.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A race condition in Cisco Secure Endpoint allows local users to delete arbitrary files on affected hosts through malicious-file scans. During quarantine, guardrails can be bypassed between scanning a malicious file and the privileged cleanup operation, letting a symlink redirect deletion. Local shell access and winning the timing race are required; successful deletion can destabilize the host or stop endpoint protection.

The record

CVE
CVE-2020-3350
Published
Jun 18, 2020
Updated
Nov 15, 2024
Vendor
ClamAV
Product
Cisco Secure Endpoint
Classifications
CWE-362, T1485
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 2020CVE publishedPublication date reported by the CVE source.
  2. Nov 15, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

ClamAV · Cisco Secure Endpointversion=n/a

Published CVSS scores

6.3NIST NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
5.5Cisco Systems, Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
3.3NIST NVDAV:L/AC:M/Au:N/C:N/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1485Data Destruction

Public exploit references

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Technologies

Your stack

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Your stack

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